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RISS 인기검색어
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- 저자 : Adls, E. J. (검색결과 4 건)
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Back-reflection Second-harmonic Generation of (111)Si: Theory and Experiment
B. Gokce,K. Gundogdu,E. J. Adles,데이비드에스프네스 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.58 No.51
We consider second-harmonic generation (SHG) from a (111) surface of a tetrahedrally bonded semiconductor illuminated at normal incidence by a focused pump beam of Gaussian cross section as a model of SHG by focused beams. Calculations are done in the anisotropic bond model (ABM) and the results are applied to Si. The unit-cell configuration is simple enough for the calculations to be done analytically, so the results can be compared directly to similar calculations done for amorphous material. Although the differences in unit-cell symmetry occur on the atomic scale, they lead to large differences in the spatial distribution of the emerging radiation. Lateral focusing, which might be expected to increase the bulk contribution to SHG by increasing the lateral field gradient, has little effect; the spatial-dispersion contribution remains dominated by the phase term. Focusing does not inhibit backscattered SHG from the bulk, although our data on the oxidation of H-terminated (111)Si clearly show that in some cases the interface contribution dominates by a wide margin.
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Zhao, Jian,Wu, Hui,Khosravi, Melanie,Cui, Huijuan,Qian, Xiaoxia,Kelly, Jennifer A.,Kaufman, Kenneth M.,Langefeld, Carl D.,Williams, Adrienne H.,Comeau, Mary E.,Ziegler, Julie T.,Marion, Miranda C.,Adl Public Library of Science 2011 PLoS genetics Vol.7 No.5
<▼1><P>Systemic lupus erythematosus (SLE), a complex polygenic autoimmune disease, is associated with increased complement activation. Variants of genes encoding complement regulator factor H (CFH) and five CFH-related proteins (CFHR1-CFHR5) within the chromosome 1q32 locus linked to SLE, have been associated with multiple human diseases and may contribute to dysregulated complement activation predisposing to SLE. We assessed 60 SNPs covering the <I>CFH</I>-<I>CFHRs</I> region for association with SLE in 15,864 case-control subjects derived from four ethnic groups. Significant allelic associations with SLE were detected in European Americans (EA) and African Americans (AA), which could be attributed to an intronic <I>CFH</I> SNP (rs6677604, in intron 11, <I>P</I><SUB>meta</SUB> = 6.6×10<SUP>−8</SUP>, OR = 1.18) and an intergenic SNP between <I>CFHR1</I> and <I>CFHR4</I> (rs16840639, <I>P</I><SUB>meta</SUB> = 2.9×10<SUP>−7</SUP>, OR = 1.17) rather than to previously identified disease-associated <I>CFH</I> exonic SNPs, including I62V, Y402H, A474A, and D936E. In addition, allelic association of rs6677604 with SLE was subsequently confirmed in Asians (AS). Haplotype analysis revealed that the underlying causal variant, tagged by rs6677604 and rs16840639, was localized to a ∼146 kb block extending from intron 9 of <I>CFH</I> to downstream of <I>CFHR1</I>. Within this block, the deletion of <I>CFHR3</I> and <I>CFHR1</I> (<I>CFHR3-1</I>Δ), a likely causal variant measured using multiplex ligation-dependent probe amplification, was tagged by rs6677604 in EA and AS and rs16840639 in AA, respectively. Deduced from genotypic associations of tag SNPs in EA, AA, and AS, homozygous deletion of <I>CFHR3-1</I>Δ (<I>P</I><SUB>meta</SUB> = 3.2×10<SUP>−7</SUP>, OR = 1.47) conferred a higher risk of SLE than heterozygous deletion (<I>P</I><SUB>meta</SUB> = 3.5×10<SUP>−4</SUP>, OR = 1.14). These results suggested that the <I>CFHR3-1</I>Δ deletion within the SLE-associated block, but not the previously described exonic SNPs of <I>CFH</I>, might contribute to the development of SLE in EA, AA, and AS, providing new insights into the role of complement regulators in the pathogenesis of SLE.</P></▼1><▼2><P><B>Author Summary</B></P><P>Systemic lupus erythematosus (SLE) is a complex autoimmune disease, associated with increased complement activation. Previous studies have provided evidence for the presence of SLE susceptibility gene(s) in the chromosome 1q31-32 locus. Within 1q32, genes encoding complement regulator factor H (CFH) and five CFH-related proteins (CFHR1-CFHR5) may contribute to the development of SLE, because genetic variants of these genes impair complement regulation and predispose to various human diseases. In this study, we tested association of genetic variants in the region containing <I>CFH</I> and <I>CFHRs</I> with SLE. We identified genetic variants predisposing to SLE in European American, African American, and Asian populations, which might be attributed to the deletion of <I>CFHR3</I> and <I>CFHR1</I> genes but not previously identified disease-associated exonic variants of <I>CFH</I>. This study provides the first evidence for consistent association between <I>CFH/CFHRs</I> and SLE across multi-ancestral SLE datasets, providing new insights into the role of complement regulators in the pathogenesis of SLE.</P></▼2>
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Guidelines for the use and interpretation of assays for monitoring autophagy (3rd edition)
Klionsky, Daniel J,Abdelmohsen, Kotb,Abe, Akihisa,Abedin, Md Joynal,Abeliovich, Hagai,Acevedo Arozena, Abraham,Adachi, Hiroaki,Adams, Christopher M,Adams, Peter D,Adeli, Khosrow,Adhihetty, Peter J,Adl Informa UK (TaylorFrancis) 2016 AUTOPHAGY Vol.12 No.1
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